Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d6b390a5bf31e07…

MALICIOUS

PDF

66.5 KB Created: 2020-07-24 06:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7cb6c6bfb47977b463c1a00a2bbed392 SHA-1: c860db3f3178ad257f57a9a6b363a433d7150525 SHA-256: 4d6b390a5bf31e07f3be4c7468426dc617d27ac5c0e891134a5dbaf2b5ebce59
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a template or lure. The presence of a visual download button further supports a malicious workflow. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=adv+synth+catal+template In PDF document text
    • http://files.huronbpa.com/uploads/1/3/0/7/130738534/juposuvisajuba-linufi-zumasibodib.pdfIn PDF document text
    • http://files.natangweruben.com/uploads/1/3/1/4/131454986/sakuxumuk_janido_woneturaradu_titoxe.pdfIn PDF document text
    • http://files.nokillhuntsville.com/uploads/1/3/1/4/131455883/jalupi.pdfIn PDF document text
    • http://files.kimajgoldsmith.com/uploads/1/3/2/8/132816165/gesubadakite.pdfIn PDF document text
    • http://files.chelseaforbrook.com/uploads/1/3/0/7/130775977/3859751.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2452/3169/files/95004936081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5299/8556/files/13423842592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2788/9304/files/suxexozezotez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0182/2875/files/xixafoxobusowudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2252/4326/files/32200205081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9927/3896/files/xetaviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/sozijukos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/tajefubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/72461776650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4387/2153/files/jodexawawenifufad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/21300892183.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC673 5000 bytes
SHA-256: 9059395a54f3c9b9bf752b25f0a42b5644d88e9cf9c360b2be2ab2e2dd5cc630
font_01_sfnt_off0000d74b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74B 10972 bytes
SHA-256: 7d57b977589dcc1c21131d4e30b2cee49a75a2523d03911d92cb8b50d9b34386

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